INOXPA HLR, Installation, Service And Maintenance Instructions

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(A) 2021/11 4.Installation 11
4.5.3. Barrier fluid with pressure tank
As the HLR Double Mechanical seal is of balanced design, the installation of a pressure tank is not necessary.
Pressure tank is only necessary if the pumped liquid, process safety rules
… requires it.
1..
.2
m
Mechanical seal
Pressure tank connection lay out
To obtain further information about the pressure tank (installation, operation, maintenance,
…) , consult the instruction manual
supplied by the manufacturer.
4.6. SECONDARY PIPING
4.6.1. Quench
If the seal requires flush media, the media supply and the purchase and installation of piping, valves ... for the media are not
the responsibility of INOXPA.
The flush shaft seal option is available on all seal types. Use the sectional drawings of the HLR seal options to purchase
additional parts.
Attention should be given to the compatibility of the handled liquid with the flush media. Choose the
sealing liquid so that unwanted chemical reactions are avoided. Also check the compatibility of the
flush media with seal elastomers.
HLR rotor cases have female threaded inlet and outlet connections and are dependent upon frame of the pump and type of
quench system employed.
4.6.2. Liquid flush media
Use a flush media which is filtered free from impurities to obtain maximum service life of the seal. If the product is sticky or
crystalline then use media which is able to dissolve the product.
Connect the quench so that the inlet is at the bottom and outlet is at the top. This will make a better evacuation or air or gases
possible.
4.6.3. Heating / cooling jackets
Heating / cooling jackets (S) are available on the front cover. Heating or cooling media can be provided via connections
according to the next figure.
Install ALWAYS the pressure tank between 1 and 2 meters above the mechanical seals. See the
figure below.
Connect ALWAYS the barrier fluid input connection with the bottom chamber seal connection. So,
the barrier fluid outlet will be carried out by the top chamber connection. See the figure below